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Sorption of americium from low-level liquid wastes by nanocrystalline MnO2

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Abstract

Nanocrystalline MnO2, synthesized by alcoholic hydrolysis of KMnO4, has been studied as a sorbent for removal of americium from low level liquid waste solutions. The synthesized MnO2 was found to have BET surface area of 230 m2 g−1. Am(III) was found to be sorbed by MnO2 quantitatively within 15 min at pH 5. The sorption was found to be more than 90 % at as low a pH as 1.2 and reached to near 100 % at all pH values above pH 3.0 There was no effect of ionic strength (0.01–1.0 M NaCl, CaCl2) on the sorption suggesting the sorption following inner sphere complexation mechanism at all the pH values. Adsorption isotherm studies were carried out using Eu(III) as a chemical analogue of Am(III). These studies showed the isotherm data to follow Langmuir adsorption isotherm.

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Acknowledgments

Authors would like to acknowledge Jyoti Prakash, Powder Metallurgy Division, BARC and Soumitra Kar, Desalination Division, BARC for surface area and FTIR measurements respectively.

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Authors and Affiliations

  1. Division of Engineering Design and Construction, Bhabha Atomic Research Centre, Mumbai, 400085, India

    K. Bhagyashree

  2. Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India

    Aishwarya Kar, Sharayu Kasar, Sumit Kumar & B. S. Tomar

  3. Waste Management Division, Bhabha Atomic Research Centre, Mumbai, 400085, India

    R. K. Mishra & C. P. Kaushik

  4. Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India

    R. Shukla & A. K. Tyagi

Authors
  1. K. Bhagyashree
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  2. Aishwarya Kar
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  3. Sharayu Kasar
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  4. Sumit Kumar
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  5. R. Shukla
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  6. R. K. Mishra
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  7. C. P. Kaushik
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  8. A. K. Tyagi
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  9. B. S. Tomar
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Correspondence to B. S. Tomar.

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Bhagyashree, K., Kar, A., Kasar, S. et al. Sorption of americium from low-level liquid wastes by nanocrystalline MnO2 . J Radioanal Nucl Chem 299, 1433–1437 (2014). https://doi.org/10.1007/s10967-013-2895-y

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  • DOI: https://doi.org/10.1007/s10967-013-2895-y

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